var george = {
  "name": "George",
  "age": 25,
  "friends": [
     {"name": "John", "age": 22 },
     {"name": "Mary", "age": 28 }
  ]
};

console.log("george.age="+george.age);
console.log("george.friends:");
var friends = george.friends;
for (i in friends)
  console.log("    "+friends[i].name+" is "+friends[i].age+"years old!");